package JLB_Chapter_06;

public class Person{
    private int id;
    private String name;
    private int age;
    Person(){
        cry();
    }
    Person(int id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
        cry();
    }
    public void cry(){
        System.out.println("哇哇哇....");
    }
    public static void main(String[] args) {
        Person Boy = new Person();
        Person Girl = new Person(123, "Paul", 10);
    }
}